I have the same problem everyone reports but this began happening suddenly. My app was working as expected, automatically launching the MAIN activity.
But all of the sudden it stopped working and I started seeing the No Launcher activity found! message.

I was able to finally fix it. As crazy as it may sound, but what I did is I erased all the code and typed it again. With only 1 change, removed this activity that I was not using. <activity android:name="RouteInfoActivity"></activity> The Activity class is still there though
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jplazaSep 15 '11 at 2:27